Analysis

  • max time kernel
    168s
  • max time network
    187s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/01/2024, 01:57

General

  • Target
    59fa728668cadc67f6c031e08cf7d203.exe
  • Size 193KB
  • Sample240114-cdg6eabab9
  • SHA256 679a4974ab63899ed62e52788c391369675a904adc969c93d4ec274dada141d2
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Executes dropped EXE 4 IoCs
  • UPX packed file 20 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 9 IoCs
  • Program crash 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SetWindowsHookEx 18 IoCs
  • Suspicious use of UnmapMainImage 5 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\59fa728668cadc67f6c031e08cf7d203.exe
    "C:\Users\Admin\AppData\Local\Temp\59fa728668cadc67f6c031e08cf7d203.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1832
    • C:\Users\Admin\AppData\Local\Temp\59fa728668cadc67f6c031e08cf7d203mgr.exe
      C:\Users\Admin\AppData\Local\Temp\59fa728668cadc67f6c031e08cf7d203mgr.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • Suspicious use of UnmapMainImage
      PID:4888
    • C:\Program Files (x86)\Microsoft\WaterMark.exe
      "C:\Program Files (x86)\Microsoft\WaterMark.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:644
      • C:\Windows\SysWOW64\svchost.exe
        C:\Windows\system32\svchost.exe
        3⤵
          PID:1120
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1120 -s 212
            4⤵
            • Program crash
            PID:380
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          3⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3096
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3096 CREDAT:17410 /prefetch:2
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:3688
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          3⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2800
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2800 CREDAT:17410 /prefetch:2
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:2316
    • C:\Program Files (x86)\Microsoft\WaterMarkmgr.exe
      "C:\Program Files (x86)\Microsoft\WaterMarkmgr.exe"
      1⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:1620
      • C:\Program Files (x86)\Microsoft\WaterMark.exe
        "C:\Program Files (x86)\Microsoft\WaterMark.exe"
        2⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of UnmapMainImage
        • Suspicious use of WriteProcessMemory
        PID:700
        • C:\Windows\SysWOW64\svchost.exe
          C:\Windows\system32\svchost.exe
          3⤵
            PID:4632
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 4632 -s 204
              4⤵
              • Program crash
              PID:4928
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            3⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:3372
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3372 CREDAT:17410 /prefetch:2
              4⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:4576
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            3⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2212
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2212 CREDAT:17410 /prefetch:2
              4⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:688
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1120 -ip 1120
        1⤵
          PID:4372
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4632 -ip 4632
          1⤵
            PID:3656

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                WaterMark.exe

                • Path C:\Program Files (x86)\Microsoft\WaterMark.exe
                • Size 193KB
                • SHA256 679a4974ab63899ed62e52788c391369675a904adc969c93d4ec274dada141d2
                • MD5 SHA1 SHA512 SSDEEP

                RecoveryStore.{5C4C4A18-B280-11EE-9A4E-DE9D3A49EF0E}.dat

                • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{5C4C4A18-B280-11EE-9A4E-DE9D3A49EF0E}.dat
                • Size 3KB
                • SHA256 aeecb72bf842ca0d55b1a3f7e621e13703a5d0f5dc774623c662cb2c551e77b9
                • MD5 SHA1 SHA512

                RecoveryStore.{5C5A92DB-B280-11EE-9A4E-DE9D3A49EF0E}.dat

                • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{5C5A92DB-B280-11EE-9A4E-DE9D3A49EF0E}.dat
                • Size 4KB
                • SHA256 4e473075dd4cd9c569a55a7b09f361e818cc228edfc5f587ca96651c90cc4a39
                • MD5 SHA1 SHA512 SSDEEP

                RecoveryStore.{5C5F5721-B280-11EE-9A4E-DE9D3A49EF0E}.dat

                • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{5C5F5721-B280-11EE-9A4E-DE9D3A49EF0E}.dat
                • Size 5KB
                • SHA256 dd8302fd8bbf21a86bb3b71079b12f535efd74dcfc46c378d8394deb89c63bd6
                • MD5 SHA1 SHA512 SSDEEP

                ver71B0.tmp

                • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver71B0.tmp
                • Size 15KB
                • SHA256 557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
                • MD5 SHA1 SHA512 SSDEEP

                suggestions[1].en-US

                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\6AXLYU2E\suggestions[1].en-US
                • Size 17KB
                • SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
                • MD5 SHA1 SHA512 SSDEEP

                59fa728668cadc67f6c031e08cf7d203mgr.exe

                • Path C:\Users\Admin\AppData\Local\Temp\59fa728668cadc67f6c031e08cf7d203mgr.exe
                • Size 95KB
                • SHA256 ce8e07cec9c3857f48e20916c65413335ab480b0c3d70345e98147b2ff7b8de6
                • MD5 SHA1 SHA512 SSDEEP

                memory/644-69-0x0000000000400000-0x0000000000451000-memory.dmp

                memory/644-66-0x0000000000070000-0x0000000000071000-memory.dmp

                memory/644-77-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/644-50-0x0000000000060000-0x0000000000061000-memory.dmp

                memory/644-49-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/644-74-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/644-70-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/644-55-0x0000000077012000-0x0000000077013000-memory.dmp

                memory/700-67-0x0000000077012000-0x0000000077013000-memory.dmp

                memory/700-75-0x0000000000400000-0x0000000000451000-memory.dmp

                memory/700-52-0x0000000000400000-0x0000000000451000-memory.dmp

                memory/700-76-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/700-60-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/700-59-0x0000000000430000-0x0000000000431000-memory.dmp

                memory/700-63-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/1620-47-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/1620-35-0x0000000000400000-0x0000000000438000-memory.dmp

                memory/1832-13-0x0000000000910000-0x0000000000911000-memory.dmp

                memory/1832-7-0x0000000000400000-0x0000000000451000-memory.dmp

                memory/1832-0-0x0000000000400000-0x0000000000451000-memory.dmp

                memory/1832-27-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/4632-64-0x0000000000640000-0x0000000000641000-memory.dmp

                memory/4632-65-0x0000000000620000-0x0000000000621000-memory.dmp

                memory/4888-12-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/4888-6-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/4888-15-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/4888-19-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/4888-22-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/4888-10-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/4888-17-0x0000000000400000-0x0000000000421000-memory.dmp

                memory/4888-5-0x0000000000400000-0x0000000000438000-memory.dmp